Question

Molarity of a pure water is
a) 1M
b)55.5M
c)27.7M
d)80.5M

Answer 1

hey mate....
The density of water is approximately 1000 g/l and it's molar mass is 18.02 g/mol (or 1/18.02=0.055mol/g ).
Therefore ,the molar concret

Answer 2

Since, we know density of water is 1000 g/L
and it's molar mass is 18.02 g/mol
Therefore the molar concentration of H2O
=1000g/mL/(18.02g/mol)=55.5 mol/L
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